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Round|Natural|GIA

2.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6521583766

Certificate GIA 6521583766

Diamond specifications and retailer prices

From $48,128 AUD
$33,807 USD
As of October 30, 2026
Save $34,875 AUD (42%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $83,002 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521583766. Listed at 20 retailers as of October 29, 2026, with prices from $48,128 to $83,002, a $34,875 spread on the same certified stone. MOH London lists it at $83,002. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6521583766
Dimensions8.74 × 8.68 × 5.35 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
8.74 mm8.68 mm2.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521583766
Side View
Table 60.0%Crown 31.5°Girdle: ThickPavilion 41.8°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $83,002 AUD|Low: $45,384 AUD|High: $83,554 AUD|Avg: $58,556 AUD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6$45,384 AUD
Retailer 7$48,458 AUD
Retailer 8$52,331 AUD
Retailer 10$52,820 AUD
Retailer 4$52,851 AUD
Retailer 9$52,863 AUD
Retailer 3$57,640 AUD
Retailer 2$62,107 AUD
Retailer 5$72,709 AUD
MOH London$83,002 AUD

36 data points across 10 retailers

20 retailers$48,128 AUD to $83,002 AUD

Retailer 1
-
$45,384 AUD
$31,880 USD
Price last confirmed 9 days ago
B+
Retailer 2
-
$48,128 AUD
$33,807 USD
View
B+
Retailer 3
-
$48,458 AUD
$34,039 USD
View
Final sale: no returns
B
Retailer 4
-
$51,299 AUD
$36,035 USD
View
Retailer 5
-
$52,331 AUD
View
Price last confirmed 27 days ago
B+
Retailer 6
-
$52,820 AUD
$37,103 USD
View
B+
Retailer 7
-
$52,851 AUD
£29,232 GBP
View
Retailer 8
-
$55,065 AUD
$38,680 USD
View
Price last confirmed 41 days ago
B+
Retailer 9
-
$55,108 AUD
$38,710 USD
View
B+
Retailer 10
-
$55,108 AUD
$38,710 USD
View
B
Retailer 11
-
$56,530 AUD
$39,709 USD
View
B
Retailer 12
-
$56,894 AUD
$39,965 USD
View
B
Retailer 13
-
$56,944 AUD
$40,000 USD
View
Retailer 14
-
$57,269 AUD
$40,228 USD
View
Price last confirmed 38 days ago
B+
Retailer 15
-
$57,640 AUD
£31,881 GBP
View
Retailer 16
-
$59,471 AUD
$41,775 USD
View
Price last confirmed 39 days ago
B
Retailer 17
-
$62,107 AUD
€41,549 EUR
View
B
Retailer 18
-
$62,404 AUD
$43,835 USD
View
B
Retailer 19
-
$72,709 AUD
ZAR 825,109 ZAR
View
Most Expensive
B
MOH London
36294D9D8 · Oct 29
$83,002 AUD
£45,909 GBP
View
19 more retailers have this diamond
Prices start from $48,128 AUDSave up to $34,875 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
2.50ct Round
$48,128 AUD